Oregon Sales Tax Calculator (2026) — Add or Reverse Tax
Oregon's combined sales tax rate is 0.00% (0.00% state). Use the calculator below to add Oregon sales tax to a price, or reverse a tax-included total to find the pre-tax price and exact tax amount.
How to use this calculator:
- Adding tax — enter a pre-tax price, pick "Add tax to price," and the calculator applies the Oregon rate to show the tax amount and final total.
- Reversing (extracting) tax — enter a total that already includes tax, pick "Extract tax from total," and the calculator divides by 1 + the rate to isolate the pre-tax price and the exact tax paid.
- Pick the rate that matches your situation: the average combined rate is a good statewide estimate, but the state-only or maximum-local rate is more precise if you know the exact city or county.
Understanding Oregon Sales Tax
Oregon's state sales tax rate is 0.00%, with no additional local sales tax in most of the state.
Oregon has no sales tax of any kind, state or local — one of only five US states, but unlike most of the others it does levy a state income tax.
Oregon also levies a state income tax, which shapes how much the state relies on sales tax revenue relative to other funding sources.
Groceries
Exempt from Oregon state sales tax.
Largest city
Portland
State income tax
Yes
Why Reverse Sales Tax Calculation Matters
Receipts, invoices, and marketplace payouts usually show only the tax-included total — not the pre-tax price. Reversing the calculation matters for bookkeeping (separating revenue from tax collected), expense reports (reimbursing only the pre-tax cost), and price comparisons (checking what an item actually costs before Oregon's tax is applied). Because dividing by (1 + rate) is not the same as simply subtracting the rate from the total, doing this by hand is a common source of errors — the calculator above handles it exactly.
History & Rate Breakdown
Oregon voters have rejected a general sales tax multiple times over the decades, leaving the state to fund government primarily through income tax. A distinctive companion feature, the 'kicker' law, was first enacted by ballot measure in 1979-1980 and later written into the state constitution in 2000.
There is no sales tax rate to break down anywhere in Oregon — no state rate, no local rate, no exceptions for specific goods or services at the point of sale.
Where the Money Goes
Because Oregon has no sales tax, the state relies almost entirely on income tax revenue — and its unique 'kicker' law requires the state to refund the surplus back to taxpayers (or, if voters choose, to K-12 schools) whenever actual biennial revenue collections exceed the official forecast by more than 2%.
Business Use Case: Registering & Collecting Oregon Sales Tax
A retailer selling into Oregon charges no sales tax on any transaction, state or local — a genuine competitive advantage for Oregon-based retailers selling to price-sensitive shoppers from neighboring Washington or California, who often cross the border specifically to make large purchases tax-free.
Sales Tax Terms Glossary
Combined rate
The state sales tax rate plus any applicable local (city, county, or special district) rates — the actual rate charged at checkout in a given location.
Reverse sales tax
The process of working backward from a tax-included total to find the pre-tax price and the exact tax amount, using total ÷ (1 + rate) = pre-tax price.
Economic nexus
A sales threshold (in dollars, transaction count, or both) that obligates an out-of-state seller to collect and remit sales tax even without a physical presence in the state.
Marketplace facilitator
A platform (e.g. Amazon, Etsy, eBay) that collects and remits sales tax on behalf of third-party sellers under most states’ marketplace facilitator laws.
Real-World Example
A $500.00 purchase in Oregon at the average combined rate of 0.00%:
- Tax amount: $500.00 × 0.00% = $0.00
- Total price: $500.00 + $0.00 = $500.00
Oregon Sales Tax Compliance for Sellers
Oregon has no general state sales tax, so there is no economic nexus threshold to track for state-level sales tax purposes. Sellers should still confirm whether any local jurisdiction-level tax applies.
Frequently Asked Questions — Oregon Sales Tax
What is the sales tax rate in Oregon?▾
Does Oregon tax groceries?▾
Does Oregon have a state income tax?▾
When do online sellers need to collect Oregon sales tax?▾
How do I calculate Oregon sales tax on a purchase?▾
How do I reverse Oregon sales tax to find the price before tax?▾
What is the formula to back out sales tax from a receipt in Oregon?▾
References & Sources
Rates last verified January 2026. Oregon sales tax rates and thresholds can change — always confirm current figures with the Oregon Department of Revenue before filing or invoicing. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorLead Content Editor & Personal Finance Specialist
Jordan Hayes is a personal finance content strategist with 9+ years building educational finance and health resources. He has written and fact-checked over 200 personal finance guides covering mortgage amortization, retirement planning, tax strategy, and budgeting. His work applies IRS publications, Federal Reserve data, and peer-reviewed research to make complex calculations accessible.